On the double counting subtraction at NLO${}^\star$ of the high-energy factorization approach

TL;DR

This paper proposes improved subtraction schemes for NLO calculations in high-energy factorization, specifically addressing double counting issues in single photon production, leading to more accurate theoretical predictions.

Contribution

It introduces a refined double counting subtraction method for NLO high-energy factorization, preventing oversubtraction and enhancing calculation consistency.

Findings

Improved subtraction scheme avoids oversubtraction.

Enhanced accuracy in single photon production predictions.

Method applicable to other high-energy processes.

Abstract

We suggest improvements for double counting subtraction scheme, which is needed for the consistent treatment of real corrections in the high-energy limit, and apply it to the single photon production at the NLO${}^\star$ approximation of the high-energy factorization approach. The presented improvements allow us to avoid the oversubtraction problem.